C++ reference syntax

Which is the correct way to specify a reference. I know both works with the compiler, but wanted to know the correct way since I have seen both in code bases.

void Subroutine(int &Parameter) 
{ 
    Parameter=100;
}

OR

void Subroutine(int&am开发者_如何学运维p; Parameter) 
{ 
    Parameter=100;
}

There is no 'correct' way, in the same way like there is no 'correct' way to place your parentheses and brackets. It's a matter of style and preference.

It's more important to be consistent.

When it comes to pointers, C programmers tend to write int *i which reads "evaluating *i yields an int". This is not possible with references. If you write int &i, evaluating &i does not yield an int, but rather a pointer to an int, because & has different meanings in declarations and expressions.

That's why I prefer to declare reference variables as int& i, because i is a reference to an int.

It's a matter of preference, both are correct, personally I nowadays like to write it as type&

I think the two are functionally identical. I personally prefer int& Parameter since it makes more sense to me -- i.e. a variable named Parameter is of type reference-to-int, whereas int &Parameter doesn't immediately make that connection to me. Most examples I've seen use the int& form as well. (i.e. see http://www.cprogramming.com/tutorial/references.html).

That's code style issue, no one is good or bad, correct or wrong.
I use this:

int & a;
int * b;

Too many spaces (any maybe a little confusing with binary operator & and *) but it looks clear to me.

As long as consistent, whatever your style is correct.